CN104466083A - Solution injection method in production process of lithium battery - Google Patents
Solution injection method in production process of lithium battery Download PDFInfo
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- CN104466083A CN104466083A CN201410768487.8A CN201410768487A CN104466083A CN 104466083 A CN104466083 A CN 104466083A CN 201410768487 A CN201410768487 A CN 201410768487A CN 104466083 A CN104466083 A CN 104466083A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a solution injection method in the production process of a lithium battery. The solution injection method comprises the following steps: (1) highly vacuumizing the lithium battery, maintaining the high vacuum degree of the lithium battery for 12s to 16s, wherein the high vacuum degree is -0.09Mpa to -0.12Mpa; (2) injecting solution into the lithium battery; (3) charging nitrogen gas into the lithium battery at the constant speed for 1s to 3s until the pressure reaches 0.5Mpa to 0.7Mpa, and maintaining the pressure for 145s to 155s; (4) roughly vacuumizing the lithium battery at constant speed for 1s to 3s, maintaining the rough vacuum degree of the lithium battery for 32s to 38s, wherein the rough vacuum degree is -0.06Mpa to -0.08Mpa; (5) repeating the step (3) and the step (4) for a plurality of times; and (6) maintaining the high pressure for 55s to 65s, wherein the high pressure is 0.5Mpa to 0.7Mpa, thus completing the injection process. By utilizing the method in the production process of the lithium battery, the injection time of the battery is shortened, the production efficiency is improved, and the unfavorable phenomenon such as leakage can be avoided.
Description
Technical field
The present invention relates to lithium battery manufacture method technical field, particularly relate to the electrolyte filling method in a kind of Production Process of Lithium Battery.
Background technology
Along with science and technology and rapid economic development, the function of market electronic product from strength to strength, and shape molded dimension require more and more less, weight demands is more and more lighter.Lithium ion battery volume is little, energy is high, high working voltage, non-environmental-pollution, have extended cycle life, the advantage such as operating temperature range is wide.
Lithium ion battery generally comprises battery case and the battery core be contained in battery container and nonaqueous electrolytic solution, and described battery core comprises positive pole, negative pole and the barrier film between positive pole and negative pole.The preparation method of this battery, makes battery core with positive pole, negative pole and barrier film, is then placed in battery case by battery core, and nonaqueous electrolytic solution injects in battery case.Described nonaqueous electrolytic solution is generally containing organic solvent and lithium salts.Therefore electrolyte uptake number be related to battery capacity and cycle life, the incomplete absorption of electrolyte can cause battery to hold the decline of reason, the increase of the internal resistance of cell and the rapid decay of cycle life.Lithium ion battery constantly reduces volume, high-octane future development, and the space for holding electrolyte in battery is very limited.Therefore must absorb as much as possible in limited space may be many electrolyte, provide battery institute must electrolyte, the cycle life of raising battery.
Existing lithium ion battery liquid injection, after battery liquid-filling, battery enters the circulation of standing high pressure and standing low vacuum, to terminating.Because final step is standing low vacuum, some electrolyte is by vacuum sucking-off, do not infiltrate battery, so when battery out time have greatly battery and there will be the bad phenomenon of sepage, reduce the time that the bad phenomenon of sepage can only lengthen standing high pressure and standing low vacuum, the fluid injection time is caused to lengthen, affect production efficiency, and the retention time vacuumized, the number of times that speed and standing high pressure and standing low vacuum circulate, all affect the fluid injection effect of lithium battery, even there will be the bad phenomenon such as sepage.
Summary of the invention
The problem to be solved in the present invention is to provide the electrolyte filling method in a kind of Production Process of Lithium Battery, avoids the existing fluid injection time long, and production efficiency is low and occur the problems such as sepage.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the electrolyte filling method in a kind of Production Process of Lithium Battery, comprises the steps,
1), to lithium battery pumping high vacuum, and keep 12 ~ 16s, high vacuum is-0.09 ~-0.12Mpa;
2), fluid injection is carried out to lithium battery;
3), to lithium battery be at the uniform velocity filled with nitrogen 1 ~ 3s, pressure reaches 0.5 ~ 0.7Mpa, keeps 145 ~ 155s;
4), to lithium battery at the uniform velocity take out low vacuum 1 ~ 3s, and keep 32 ~ 38s, low vacuum is-0.06 ~-0.08Mpa;
5), step 3 is repeated) and step 4) several times;
6), high pressure keeps 55 ~ 65s, and described high pressure is 0.5 ~ 0.7Mpa, and injection process completes.
Preferably, step 1) in, the vacuum retention time is 15s, and high vacuum is-0.1Mpa.
Preferably, step 3) in, be filled with nitrogen 2s to lithium battery, pressure reaches 0.6Mpa, keeps 150s.
Preferably, step 4) in, take out low vacuum 2s to lithium battery, and keep 35s, low vacuum is-0.07Mpa.
Preferably, described step 6) in, high pressure keeps 60s, and described high pressure is 0.6Mpa.After battery liquid-filling, battery enters circulation and the step 3 of standing high pressure and standing low vacuum) with step 5) circulation, to terminate.Because final step is standing low vacuum, some electrolyte is by vacuum sucking-off, do not infiltrate battery, so when battery out time have greatly battery and there will be the bad phenomenon of sepage, reduce the time that the bad phenomenon of sepage can only lengthen standing high pressure and standing low vacuum, cause the fluid injection time to lengthen, affect production efficiency, can step 6 be passed through successively) avoid the appearance of this phenomenon.
Preferably, described step 5) in, repeat step 3) and step 4) totally four times.
The advantage that the present invention has and good effect are: due to the use of this method in Production Process of Lithium Battery, the fluid injection time decreased of battery, improve production efficiency, and avoid the bad phenomenon such as sepage.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the electrolyte filling method in a kind of Production Process of Lithium Battery of the present invention;
Embodiment
As shown in Figure 1, the electrolyte filling method in a kind of Production Process of Lithium Battery, comprises the steps,
1), to lithium battery pumping high vacuum, and keep 15s, high vacuum is-0.1Mpa;
2), fluid injection is carried out to lithium battery;
3), to lithium battery be at the uniform velocity filled with nitrogen 2s, pressure reaches 0.6Mpa, keeps 150s;
4), to lithium battery at the uniform velocity take out low vacuum 2s, and keep 35s, low vacuum is-0.07Mpa;
5), step 3 is repeated) and step 4) totally 4 times;
6), high pressure keeps 60s, and described high pressure is 0.6Mpa, and injection process completes.Control group, comprises the steps:
1), to lithium battery pumping high vacuum, and keep 20s, high vacuum is-0.15Mpa;
2), fluid injection is carried out to lithium battery;
3), to lithium battery be at the uniform velocity filled with nitrogen 4s, pressure reaches 0.8Mpa, keeps 140s;
4), to lithium battery at the uniform velocity take out low vacuum 4s, and keep 40s, low vacuum is-0.12Mpa;
5), step 3 is repeated) and step 4) totally 4 times, injection process completes.
The change of fluid injection time, the fluid injection time of control group is approximately 20min, and fluid injection time shorten of the present invention is to 15min.
The change of sepage fraction defective, the sepage fraction defective of control group is greater than 10%, and sepage fraction defective of the present invention is less than 1%.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.
Claims (6)
1. the electrolyte filling method in Production Process of Lithium Battery, is characterized in that: comprise the steps,
1), to lithium battery pumping high vacuum, and keep 12 ~ 16s, high vacuum is-0.09 ~-0.12Mpa;
2), fluid injection is carried out to lithium battery;
3), to lithium battery be at the uniform velocity filled with nitrogen 1 ~ 3s, pressure reaches 0.5 ~ 0.7Mpa, keeps 145 ~ 155s;
4), to lithium battery at the uniform velocity take out low vacuum 1 ~ 3s, keep 32 ~ 38s, low vacuum is-0.06 ~-0.08Mpa;
5), step 3 is repeated) and step 4) several times;
6), high pressure keeps 55 ~ 65s, and described high pressure is 0.5 ~ 0.7Mpa, and injection process completes.
2. the electrolyte filling method in Production Process of Lithium Battery according to claim 1, is characterized in that: step 1) in, the vacuum retention time is 15s, and high vacuum is-0.1Mpa.
3. the electrolyte filling method in Production Process of Lithium Battery according to claim 1, is characterized in that: step 3) in, be filled with nitrogen 2s to lithium battery, pressure reaches 0.6Mpa, keeps 150s.
4. the electrolyte filling method in Production Process of Lithium Battery according to claim 1, is characterized in that: step 4) in, take out low vacuum 2s to lithium battery, and keep 35s, low vacuum is-0.07Mpa.
5. the electrolyte filling method in Production Process of Lithium Battery according to claim 1, is characterized in that: described step 6) in, high pressure keeps 60s, and described high pressure is 0.6Mpa.
6. the electrolyte filling method in the Production Process of Lithium Battery according to any one of Claims 1 to 5, is characterized in that: described step 5) in, repeat step 3) and step 4) totally four times.
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| CN201410768487.8A CN104466083A (en) | 2014-12-11 | 2014-12-11 | Solution injection method in production process of lithium battery |
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| CN201410768487.8A CN104466083A (en) | 2014-12-11 | 2014-12-11 | Solution injection method in production process of lithium battery |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529429A (en) * | 2015-11-10 | 2016-04-27 | 河北银隆新能源有限公司 | Injection method of cylindrical lithium ion battery |
| CN105679992A (en) * | 2015-05-30 | 2016-06-15 | 张中阳 | Special fast liquid injection method for lithium battery |
| CN106450142A (en) * | 2016-11-03 | 2017-02-22 | 江西安驰新能源科技有限公司 | Liquid injection process for high-specific-energy lithium ion battery |
| CN106941194A (en) * | 2017-03-10 | 2017-07-11 | 江西佳沃新能源有限公司 | A kind of lithium ion battery liquid injection method |
| CN108054337A (en) * | 2017-12-30 | 2018-05-18 | 山东精工电子科技有限公司 | Lithium ion battery liquid injection method |
| CN108390009A (en) * | 2018-01-15 | 2018-08-10 | 江西安驰新能源科技有限公司 | A kind of pressurized liquid injection technique of lithium ion battery |
| CN108417770A (en) * | 2018-01-15 | 2018-08-17 | 江西安驰新能源科技有限公司 | A kind of charging/discharging type liquid injection process of lithium ion battery |
| CN105977443B (en) * | 2016-06-01 | 2018-11-06 | 中航锂电（洛阳）有限公司 | A kind of electrolyte filling method of lithium ion battery |
| CN108832071A (en) * | 2018-05-21 | 2018-11-16 | 中航锂电（洛阳）有限公司 | Liquid injection method and preparation method of a hard-shell lithium-ion battery |
| CN109119693A (en) * | 2018-07-20 | 2019-01-01 | 多氟多（焦作）新能源科技有限公司 | A kind of preparation method of standing method and soft bag lithium ionic cell after soft bag lithium ionic cell fluid injection |
| CN109273663A (en) * | 2018-11-21 | 2019-01-25 | 惠州亿纬锂能股份有限公司 | A kind of battery electrolyte injection method |
| CN109830755A (en) * | 2019-01-11 | 2019-05-31 | 深圳吉阳智能科技有限公司 | A kind of electrolyte wetting method for lithium battery |
| CN110160915A (en) * | 2019-05-22 | 2019-08-23 | 苏州宇量电池有限公司 | A kind of test method of battery electrolyte infiltration consistency |
| CN110993881A (en) * | 2019-12-23 | 2020-04-10 | 天能电池(芜湖)有限公司 | Efficient acid adding process |
| CN111048736A (en) * | 2019-06-26 | 2020-04-21 | 荷贝克电源系统（溧阳）有限公司 | Liquid injection process for nickel-cadmium storage battery |
| CN111653722A (en) * | 2020-05-15 | 2020-09-11 | 捷威动力工业嘉兴有限公司 | Efficient liquid injection method and device for soft package battery |
| CN112821017A (en) * | 2020-12-31 | 2021-05-18 | 惠州亿纬锂能股份有限公司 | Liquid injection method of lithium ion battery |
| CN113794037A (en) * | 2021-08-30 | 2021-12-14 | 大连中比动力电池有限公司 | Liquid injection method for steel shell full-lug cylindrical battery cell |
| CN115295977A (en) * | 2022-08-05 | 2022-11-04 | 风帆有限责任公司 | Acid filling method for start-stop AGM battery |
-
2014
- 2014-12-11 CN CN201410768487.8A patent/CN104466083A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679992A (en) * | 2015-05-30 | 2016-06-15 | 张中阳 | Special fast liquid injection method for lithium battery |
| CN105529429A (en) * | 2015-11-10 | 2016-04-27 | 河北银隆新能源有限公司 | Injection method of cylindrical lithium ion battery |
| CN105977443B (en) * | 2016-06-01 | 2018-11-06 | 中航锂电（洛阳）有限公司 | A kind of electrolyte filling method of lithium ion battery |
| CN106450142A (en) * | 2016-11-03 | 2017-02-22 | 江西安驰新能源科技有限公司 | Liquid injection process for high-specific-energy lithium ion battery |
| CN106450142B (en) * | 2016-11-03 | 2019-01-22 | 江西安驰新能源科技有限公司 | A kind of liquid injection process of high specific energy lithium ion battery |
| CN106941194A (en) * | 2017-03-10 | 2017-07-11 | 江西佳沃新能源有限公司 | A kind of lithium ion battery liquid injection method |
| CN108054337A (en) * | 2017-12-30 | 2018-05-18 | 山东精工电子科技有限公司 | Lithium ion battery liquid injection method |
| CN108417770A (en) * | 2018-01-15 | 2018-08-17 | 江西安驰新能源科技有限公司 | A kind of charging/discharging type liquid injection process of lithium ion battery |
| CN108417770B (en) * | 2018-01-15 | 2021-04-20 | 江西安驰新能源科技有限公司 | Charging and discharging type liquid injection process of lithium ion battery |
| CN108390009A (en) * | 2018-01-15 | 2018-08-10 | 江西安驰新能源科技有限公司 | A kind of pressurized liquid injection technique of lithium ion battery |
| CN108832071A (en) * | 2018-05-21 | 2018-11-16 | 中航锂电（洛阳）有限公司 | Liquid injection method and preparation method of a hard-shell lithium-ion battery |
| CN108832071B (en) * | 2018-05-21 | 2021-07-13 | 中航锂电（洛阳）有限公司 | A kind of liquid injection method and preparation method of hard shell lithium ion battery |
| CN109119693A (en) * | 2018-07-20 | 2019-01-01 | 多氟多（焦作）新能源科技有限公司 | A kind of preparation method of standing method and soft bag lithium ionic cell after soft bag lithium ionic cell fluid injection |
| CN109273663A (en) * | 2018-11-21 | 2019-01-25 | 惠州亿纬锂能股份有限公司 | A kind of battery electrolyte injection method |
| CN109830755A (en) * | 2019-01-11 | 2019-05-31 | 深圳吉阳智能科技有限公司 | A kind of electrolyte wetting method for lithium battery |
| CN110160915A (en) * | 2019-05-22 | 2019-08-23 | 苏州宇量电池有限公司 | A kind of test method of battery electrolyte infiltration consistency |
| CN111048736A (en) * | 2019-06-26 | 2020-04-21 | 荷贝克电源系统（溧阳）有限公司 | Liquid injection process for nickel-cadmium storage battery |
| CN110993881A (en) * | 2019-12-23 | 2020-04-10 | 天能电池(芜湖)有限公司 | Efficient acid adding process |
| CN111653722A (en) * | 2020-05-15 | 2020-09-11 | 捷威动力工业嘉兴有限公司 | Efficient liquid injection method and device for soft package battery |
| CN112821017A (en) * | 2020-12-31 | 2021-05-18 | 惠州亿纬锂能股份有限公司 | Liquid injection method of lithium ion battery |
| CN113794037A (en) * | 2021-08-30 | 2021-12-14 | 大连中比动力电池有限公司 | Liquid injection method for steel shell full-lug cylindrical battery cell |
| CN113794037B (en) * | 2021-08-30 | 2023-11-10 | 大连中比动力电池有限公司 | Liquid injection method for steel shell full-lug cylindrical battery cell |
| CN115295977A (en) * | 2022-08-05 | 2022-11-04 | 风帆有限责任公司 | Acid filling method for start-stop AGM battery |
| CN115295977B (en) * | 2022-08-05 | 2024-05-17 | 风帆有限责任公司 | Acid filling method for AGM battery during start-stop operation |
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Application publication date: 20150325 |